Subaru Impreza WRX STI ECU remapping
8 files available
About remapping
The Subaru Impreza WRX STI accounts for 8 files in our catalogue, entirely turbocharged boxer petrol: the 2.5T leads with the 2.0 Turbo also present. It is a rally-derived saloon with symmetrical all-wheel drive, one of the great tuning bases.
Stage 1 accounts for all 8 files, with one Stage 2, one speed limiter removal and one pop and bang. The ECUs are Denso and Hitachi references including Denso 2010.
Model highlights
- ›8 Stage 1 files: a completely clean performance profile.
- ›Entirely turbocharged boxer petrol: 2.5T and 2.0 Turbo.
- ›A rally-derived saloon with symmetrical all-wheel drive.
- ›ECUs limited to Denso and Hitachi references including Denso 2010.
Fuel split
Engines and gains
| Engine | Fuel | Stock | Stage 1 | Stage 2 |
|---|---|---|---|---|
| 2.5 WRX STI | Petrol | 300 hp | 325 hp +25 | 355 hp +55 |
| 2.5 WRX | Petrol | 265 hp | 305 hp +40 | 320 hp +55 |
| 2.0 WRX STI | Petrol | 265 hp | 294 hp +29 | — |
| 2.0 WRX | Petrol | 224 hp | 254 hp +30 | — |
| 2.0 Turbo | Petrol | 218 hp | 248 hp +30 | — |
Indicative figures from the technical catalogue; confirmed when you request the file.
Power curve
2.0 WRX STI
ECUs
ECU manufacturers
Available services
Remapping services
Stage 1
Optimising the original map with no hardware changes: more power and torque, full reliability.
Pops & bangs
Pops & bangs exhaust effect (on lift-off and gear changes).
Stage 2
Remap for vehicles with mechanical upgrades (intake, exhaust, intercooler…).
Speed limiter removal
Removal of the factory speed limiter.
Why remap with Repromatronic
- ✓More power and torque with engine-safe tuning
- ✓Sharper throttle response and nicer driving
- ✓Potential fuel savings in normal driving
- ✓Files built from the original and 100% reversible
- ✓Made by technicians with thousands of projects behind them
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Log in as a professionalFrequently asked questions
How much does the 2.5T take?
It is a turbocharged boxer with real headroom, one of the great tuning bases. Stage 1 works with standard hardware.
Does it affect the all-wheel-drive system?
No. The work is done on the engine ECU and does not alter the operation of the drivetrain.
Is the work reversible?
Yes. We always keep the original ECU file, so the car can be returned to its factory configuration.